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vislab-tecnico-lisboa / hda_code

Evaluation software to produce perfectly comparable CMC curves and Precision/Recall values on the HDA dataset given a Re-Identification algorithm.
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The dataset homographies are imprecise #12

Closed angelcarro closed 2 years ago

angelcarro commented 2 years ago

Hi!

I think the homographies released in v1.3 of the dataset are quite imprecise. I did not found calibration information of the cameras and the images have lens distortion. Is there any calibration information available? Have the homographies been obtained directly with the provided uncalibrated images?

Thanks!

WurmD commented 2 years ago

That is the case. No further calibration is available besides what's provided here and with the dataset proper

angelcarro commented 2 years ago

OK. I am going to modify the homographies to fix some incorrect positions. Also, the approximate position of each camera in the map is provided in the dataset in a matlab figure. However, the height of each camera is not provided, which would be useful for my research. Are these heights known? Could you provide an approximate value? Thanks again.

WurmD commented 2 years ago

Hi, we found the code used to compute the homographies: https://www.dropbox.com/sh/votkw5nt0ibo4tq/AADWGQnheJQN1BD2Pd-6aFPSa?dl=0

It does not require the height of the cameras, only the points in the map (which are known have all height 0), and the same points clicked in each camera image

angelcarro commented 2 years ago

Thanks!